The Series QBY Pneumatic diaphragm pumps are operated with compressed air while the Series DBY electric diaphragm pumps are driven by electric motor. Enine's diaphragm pumps work as well as those imported from Germany or USA, suitable for pumping fluids with particles, and various liquids, which are highly viscous, volatile, corrosive or toxic, as well as colloids. The pump body is made of aluminum alloys, cast iron or stainless steel. The diaphragm is made of high quality rubber such as acrylnitrile butadiene rubber, chloroprene rubber, fluorous rubber or polytetrafluoroethylene. The diaphragm pumps are widely used in the petroleum, chemical, electronic, ceramic and textile industries.